Answers

Add 70/84 and 9/70

70/84 + 9/70 is 101/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   70/84 = 70 × 5/84 × 5 = 350/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   9/70 = 9 × 6/70 × 6 = 54/420
4. Add the two like fractions:
   350/420 + 54/420 = 350 + 54/420 = 404/420
5. 404/420 simplified gives 101/105
6. So, 70/84 + 9/70 = 101/105

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